Punnett Square Practice Flashcard

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present in the genotype.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Gg.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as GG or gg.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotypes of offspring from a genetic cross.

Front

How do you set up a Punnett Square?

Back

To set up a Punnett Square, write the alleles of one parent across the top and the alleles of the other parent along the side.

Front

What is the purpose of using a Punnett Square?

Back

The purpose of using a Punnett Square is to determine the possible genotypes and phenotypes of offspring.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.